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基于“强墙肢弱连梁”合理耗能机制控制的前提,提出钢筋混凝土框架-剪力墙结构基于能量抗震设计的实施流程。基于大量钢筋混凝土框架-剪力墙结构算例的弹塑性时程分析结果,给出了钢筋混凝土框架-剪力墙结构各构件累积耗能需求的实用计算方法,包括结构总累积耗能E H,E H在连梁、墙肢和框架梁中的分配,各类构件累积耗能沿楼层高度的分布,同层同类构件的累积耗能分配。结合合理的构件损伤评价模型,建议了钢筋混凝土框架-剪力墙结构各类构件的能力设计方法,将基于能量抗震设计方法落实到构件层次。最后,通过一个20层钢筋混凝土框架-剪力墙结构算例,说明了所建议的基于能量抗震设计方法的具体应用。与时程分析结果的比较表明,所建议方法的构件耗能需求计算结果与时程分析结果吻合较好,且偏于安全。
Based on the premise of controllable weak energy beam with strong webs, this paper puts forward the implementation procedure based on energy seismic design of RC frame-shear wall structure. Based on the results of elasto-plastic time-history analysis of a large number of RC frame-shear wall structures, the practical calculation methods of cumulative energy consumption of each component of RC frame-shear wall structure are given, including the total cumulative energy consumption EH, The distribution of EH in beams, wall members and frame beams, the distribution of cumulative energy consumption of various components along the height of the floor, and the cumulative energy consumption of similar components in the same floor. Combining with the reasonable evaluation model of component damage, the design method of all kinds of components of RC frame-shear wall structure is proposed, and the method based on energy seismic design is implemented to the component level. Finally, a 20-story reinforced concrete frame-shear wall structure example is presented to illustrate the specific application of the proposed seismic energy-based design method. Comparison with the results of time-history analysis shows that the calculation results of the components' energy consumption requirements of the proposed method are in good agreement with the time-history analysis and are biased towards safety.